This Friday 23 November, Black Friday, no less than 25 Clear Skies Observing Guides Messier editions will be given away! 25 FREE Messier editions.Your choice of either the sequential, by constellation or marathon edition.

Unless used 25 times the code will remain active until Saturday 24 November.

Discount code for a free CSOG Messier edition: blackfriday2012

Please read the Clear Skies website (www.clearskies.eu) to decide which Messier edition is right for you, along with the image orientation you prefer.

Go to the Purchase page, hit the PayPal button, add a Messier edition to your shopping cart and check out using the discount code.